Respuesta :

Heather

Answer:

3 hours

Step-by-step explanation:

      We can set up an equation and solve. Let x be hours that have passed, the answer to our question.

-7 = 8 -5x         - Created equation

-15 = -5x             - Subtract -8 from both sides

3 = x                     - Divide both sides of the equation by -5

      In 3 hours the temperature will be -7°.

thishigopal

Answer:

-7°

Step-by-step explanation:

after 1 hr temp = 3°

after 2 hrs = -2°

after 3 hrs = -7°

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